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I have the following Ultimate Thread 120 VUs(see screenshot) which failed with the following 2 messages :

  • 1-bzm - Streaming Sampler - master,Non HTTP response code: javax.net.ssl.SSLException,Non HTTP response message: Received close_notify during handshake,jp@gc - Ultimate Thread Group
  • 2- bzm - Streaming Sampler - master,Non HTTP response code: org.apache.http.NoHttpResponseException,Non HTTP response message: damxdcfpo.maxdome.de:443 failed to respond,jp@gc - Ultimate Thread Group

enter image description here

And the same test Sceanrio with 40 Thread works well (screenshot)

enter image description here

where can be the problem?

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otmann
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1 Answers1

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Most probably the server you're testing gets overloaded and cannot handle 120 virtual users.

Next steps you could do is:

  1. Find the saturation point (the point of maximum system performance) by looking into metrics like Active Threads Over Time, Response Times over Time, Transactions per Second.

    Ideally response time should remain steady and the transactions per second should increase by the same factor as the number of virtual users. When response time starts growing - it indicates the bottleneck

  2. Find the reason for the system not being handle 120 concurrent users which might be in:

Dmitri T
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